If you want nice view, you will have to climb to the top.
If you buy notecard, you will have plenty of paper to write on.
If you make mistake, you will have to pay for it.
If you drink too much, you will be drunk.
If you order online, you will have to wait 3 days for delivery.
doplněno 23.02.15 23:28:
vysvetlit to neumim nicmene po IF na zacatku vety je asi vzdycky infinitiv, ale nemusim mit pravdu, nejsem ucitel anglictiny